The phenomenon of the
reuse of the ancient in architecture is a widespread practice in the monumental complexes of medieval Campania, in particular in the center of Salerno. The classical antiquities of Salerno come from the ruins of Lazio and Campi Flegrei, later from Paestum,
towards the beginning of the 12th century. For the workers of Salerno, the territory of Paestum must have been a privileged basin during the
12th century for the procurement of building materials that responded to a dual purpose: to be easy to find and reminiscent of illustrious times. The proximity definitely offered savings on transport costs by sea, the abundance of travertine already quarried affected the costs of the stonecutters. Coastal churches and religious institutes own lands in the Paestum plain, making it easier to supply.